JVC MX-G950V Service Manual page 41

BU2092 (IC642) : Port expander
1.Terminal Layout
1
Vss
DATA
2
CLOCK 3
LCK
4
Q0
5
Q1
6
Q2
7
Q3
8
Q4
9
2.Pin Function
Symbol
Pin No.
1 Vss
2 DATA
3 CLOCK
4 LCK
5~16 Q0~Q11
17 OE
18 Vdd
CONTROL
CIRCUIT
Function
I/O
- Connect to GND
I Serial Data input
I Shift Clock of Data
I Latch Clock of Data
O Parallel Data Output
Latch Data L H
OUTPUT ON OFF
I Output Enable
- Power Supply
Vdd
18
OE
17
Q11
16
Q10
15
Q9
14
Q8
13
Q7
12
Q6
11
Q5
10
MX-G950V/MX-G880V
MX-G850V/MX-G750V
1-41